Synthesis of NiWP coated diamonds particles with enhanced mechanical and anti-corrosion property for diamond wires of the sawing process

2021 ◽  
pp. 105627
Author(s):  
Kyounghoon Moon ◽  
Jinmyeong Seo ◽  
Bongyoung Yoo
Keyword(s):  
Corrosion Property ◽  
Sawing Process ◽  
Coated Diamonds

Analysis of Al-over-Cu Bond Pad Hillock and Pit Hole Defects

2005 ◽  
Author(s):  
Daniel Cavasin ◽  
Abdullah Yassine
Keyword(s):  
Focused Ion Beam ◽  
Galvanic Corrosion ◽  
Process Analysis ◽  
Ion Beam ◽  
Metal Corrosion ◽  
Process Characterization ◽  
Nucleation Sites ◽  
Hole Defects ◽  
Bond Pads ◽  
Sawing Process

Abstract Bond pad metal corrosion was observed during assembly process characterization of a 0.13um Cu microprocessor device. The bond pad consisted of 12kÅ of Al-0.5%Cu atop 9kÅ of Cu, separated by a thin Ta diffusion barrier. The corrosion was first noted after the wafer dicing process. Analysis of the pad surface revealed pitting-type corrosion, consistent with published reports of classic galvanic cell reactions between Al2Cu (theta phase) particles and the surrounding Al pad metal. Analysis of the bond pads on samelot wafers which had not been diced showed higher-thanexpected incidence of hillock and pit hole defects on the Al surface. Statistically designed experiments were formulated to investigate the possibility that the observed pre-saw pad metal defects act as nucleation sites for galvanic corrosion during the sawing process. Analyses of the experimental samples were conducted using optical and scanning electron microscopy, along with focused ion beam deprocessing and energy dispersive X-ray. This paper explores the relationship between the presence of these pre-existing defects and the propensity for the bond pads to corrode during the dicing process, and reviews the conditions under which pit hole defects are formed during the final stages of the Cu-metallized wafer fabrication process. Indications are that strict control of wafer fab backend processes can reduce or eliminate the incidence of such defects, resulting in elimination of bond pad corrosion in the wafer dicing process.

Combining experimental and theoretical researches to insight into the anti-corrosion property of Morinda citrifolia Linn leaves extracts

2021 ◽  
Vol 325 ◽  
pp. 115145
Author(s):  
Jiahong He ◽  
Dan Yu ◽  
Qiang Xu ◽  
Guoqiang Li ◽  
Guorong Chen ◽  
...  
Keyword(s):  
Corrosion Property ◽  
Morinda Citrifolia ◽  
Insight Into

An electrochemical synthesis of a rare-earth(La3+)-doped ZIF-8 hydroxyapatite composite coating for a Ti/TiO2 implant material

2021 ◽  
Author(s):  
Ziqi Zhang ◽  
Xiang Ni ◽  
Kaida Yao ◽  
Siqi Zhang ◽  
Yang Liu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Composite Coating ◽  
Electrochemical Synthesis ◽  
Corrosion Property ◽  
Titanium Implants ◽  
Implant Material ◽  
Hydroxyapatite Composite

Enhance the antibacterial and anti-corrosion property on the premise of minimizing the biocompatibility loss of titanium implants.

Preliminary study of adsorption behavior of bovine serum albumin (BSA) protein and its effect on antibacterial and corrosion property of Ti-3Cu alloy

2021 ◽  
Vol 80 ◽  
pp. 117-127
Author(s):  
Muhammad Ali Siddiqui ◽  
Ihsan Ullah ◽  
Hui Liu ◽  
Shuyuan Zhang ◽  
Ling Ren ◽  
...  
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Corrosion Property ◽  
Adsorption Behavior ◽  
Preliminary Study

Effects of Li, B and H Elements on Corrosion Property of Oxide Films on ZIRLO Alloy in 300 ℃/14 MPa Lithium Borate Buffer Solutions

2020 ◽  
pp. 109216
Author(s):  
Kejian Wei ◽  
Xingping Wang ◽  
Minghao Zhu ◽  
Haohao Guan ◽  
Chi Xu ◽  
...  
Keyword(s):  
Oxide Films ◽  
Corrosion Property ◽  
Borate Buffer ◽  
Lithium Borate ◽  
Buffer Solutions

Modeling Corrosion Property of High Chromium Cast Iron under H3PO4 Medium Condition Using Artificial Intelligence

2010 ◽  
Vol 150-151 ◽  
pp. 1054-1057
Author(s):  
Song Min Zhang ◽  
Liu Jie Xu
Keyword(s):  
Neural Network ◽  
Weight Loss ◽  
Cast Iron ◽  
Bp Neural Network ◽  
Corrosion Property ◽  
Corrosion Properties ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron ◽  
Corrosion Time

The components in slurry pump suffer serious corrosion and abrasion in the phosphorus fertilizer manufacturing process because they undergo corrosion of H3PO4 medium and impact of particles at the same time. Presently, High chromium cast irons are often used to produce the components in slurry pump. In order to reveal the corrosive law, the corrosion properties of high chromium cast iron with 26wt.%Cr content (Cr26) were tested under different H3PO4 medium concentration conditions. Using back-propagation (BP) neural network, the non-linear relationship between the corrosion weight losses (W) and H3PO4 concentration, corrosion time (C, t) is established on the base of the dealing with experimental data. The results show that the well-trained BP neural network can predict the wear weight loss precisely according to H3PO4 concentration and corrosion time. The prediction results reveal that corrosion weight loss rises linearly with increasing corrosion time. The H3PO4 concentration has obvious effect on corrosion property. When H3PO4 concentration is lower than about 0.5mol/L, high chromium cast iron has well resistance to H3PO4 corrosion. However, the corrosion resistance of high chromium cast iron rapidly decreases when the H3PO4 concentration exceed about 0.8 mol/L. It is suggest the high chromium cast iron be used under the condition of H3PO4 concentration of lower 0.8 mol/L.

Preparation of Electrodeposited Ni-CNTs Nanocomposite Coatings with Highly Wear and Corrosion Resistance Properties

2012 ◽  
Vol 548 ◽  
pp. 101-104 ◽  
Author(s):  
W. Shao ◽  
D. Nabb ◽  
N. Renevier ◽  
I. Sherrington ◽  
J.K. Luo
Keyword(s):  
Mechanical Property ◽  
Carbon Nanotubes ◽  
Corrosion Resistance ◽  
Surface Morphology ◽  
Corrosion Property ◽  
Nanocomposite Coatings ◽  
Sem Images ◽  
Wear And Corrosion ◽  
Watts Bath ◽  
Wear And Corrosion Resistance

Ni-carbon nanotubes nanocomposite coatings were obtained from a Watts bath containing uniformly dispersed carbon nanotubes (CNTs). The surface morphology was investigated by the SEM images of coatings. The mechanical property and corrosion resistance of the nanocomposite coatings were investigated. This study revealed these CNTs reinforced Ni nanocoatings have improved mechanical and corrosion property.

Effect of CO2 on Anti-Corrosion Property of a Polyurea Coating Modified with Organosilicone

2014 ◽  
Vol 789 ◽  
pp. 466-470
Author(s):  
Qing Hao Shi ◽  
Bing Ying Wang ◽  
Bin Zhao
Keyword(s):  
High Temperature ◽  
Partial Pressure ◽  
Composite Coating ◽  
Corrosion Test ◽  
Electrochemical Impedance ◽  
Failure Process ◽  
Corrosion Property ◽  
Corrosion Mechanism ◽  
Partial Pressures ◽  
High Temperature High Pressure

The corrosion mechanism of organic silicon modified polyurea composite coating under different CO2 partial pressures was studied using high-temperature autoclave, combined with scanning electron microscopy (SEM), adhesion tests and electrochemical impedance spectroscopy (EIS) technology. The experimental results showed that: there was no corrosion product formed on the surface of coating sample after high-temperature high-pressure corrosion test, and with the increasing of CO2 partial pressure, the coating adhesion and impedance values decline increases. Moreover CO2 partial pressure increases accelerated the failure process of polyurea composite coating system.

Effects of Zn on the microstructure, mechanical property and bio-corrosion property of Mg–3Ca alloys for biomedical application

2011 ◽  
Vol 125 (3) ◽  
pp. 568-575 ◽  
Author(s):  
Hui Du ◽  
Zunjie Wei ◽  
Xinwang Liu ◽  
Erlin Zhang
Keyword(s):  
Mechanical Property ◽  
Biomedical Application ◽  
Corrosion Property

Corrosion Property of Container Using Hybrid Material for Thermal Decomposition Process of Sulfuric Acid

2021 ◽  
Author(s):  
Ikuo Ioka ◽  
Jin Iwatsuki ◽  
Yoshiro Kuriki ◽  
Daisuke Kawai ◽  
Hiroki Yokota ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Sulfuric Acid ◽  
Hybrid Material ◽  
Corrosion Property ◽  
Decomposition Process ◽  
Thermal Decomposition Process
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